納扎索(1997)報告說：絲路薊(Cirsium arvense)經由直接競爭取代自然植群而威脅天然植被，降低物種多樣性，改變一些棲地的結構和組成。未受干擾的”草原的物種多樣性，與絲路薊的相對出現頻率成反比。它對農民和農場業主的經濟產生威脅。此植物的侵襲會競奪水份，營養物和礦物質，使農作物產量減少，也會干擾收穫。在加拿大，絲路薊(Cirsium arvense)的主要影響是在農地，自然田野已經或正在從干擾中恢復。在美國，它是豆蚜蟲，莖螟的宿主，這些昆蟲會影響玉米和番茄以及草皮，也是網蠕蟲的宿主，此昆蟲會損害玉米。在保加利亞，絲路薊是黃瓜花葉病毒的宿主。此病毒除了會減少飼料和牧草生產以外，也可能會割傷草食動物，導致小感染。Zouhar(2001)報告說：在美國中西部，大平原各州和太平洋西北地區的許多國家公園和TNC(大自然保護協會)的保護區，它已被確定是一個管理上很麻煩的問題。絲路薊(Cirsium arvense)的侵襲可能會助長消滅瀕危或特有植物，如懷俄明州的科羅拉多蝴蝶植物。
農業: Zouhar (2001) states that it is considered one of the most tenacious and economically important agricultural weeds. Nuzzo (2001) states that infestations reduce crop yield through competition for water, nutrients and minerals, and through interference with harvest. In Canada, the major impact is on agricultural land and in natural areas that have been disturbed or are undergoing restoration.
United States (USA)
競爭: It threatens natural communities by directly competing with and displacing native vegetation, decreasing species diversity, and changing the structure and composition of some habitats (Nuzzo, 1997).
經濟 /民生: Zouhar (2001) states that it is considered one of the most tenacious and economically important agricultural weeds. It presents an economic threat to farmers and ranchers (Nuzzo, 1997), costing tens of millions of dollars in direct crop losses annually and additional millions for control (Thunhorst and Swearingen, 1997).
農業: Thunhorst and Swearingen (1997) report that Cirsium arvense has long been recognized as a major agricultural pest. Nuzzo (2001) states that infestations reduce crop yield through competition for water, nutrients and minerals, and through interference with harvest. It is a host for bean aphid and stalk borer, insects that affect corn and tomatoes, and for sod-web worm (Crampus sp.), which damages corn.
Wyoming (United States (USA))
其他: Infestations of Cirsium arvense may contribute to the elimination of endangered and/or endemic plant species such as the Colorado butterfly plant in Wyoming (Zouhar, 2001).